Third grade students will be able to define vibration.
Students will
also learn that sound is created by vibration.

Materials:
tuning fork, lid and uncooked popcorn

Strategy:

Ask the question what is vibration? A rapid motion back and
forth; the
action of vibrating. The teacher will put the definition on the
chalk
board. Ask students what will happen to the popcorn kernels in a
lid when
the lid is touched with an active tuning fork? Students will make
a
prediction.

Show students the materials to be used in the experiment and state
the
problem.

Problem: What will happen to the popcorn kernels in a lid
when the lid
is touched with an active tuning fork?

Pass out individual scientific method worksheet and students will
write down
their predictions and hypothesis. Ask volunteers to explain the
reasons
for their predictions.

Students will conduct the experiments

Discuss results as explained in the objective.

Students will complete the student scientific method worksheet.

Performance Assessment:

Students will be able to define vibration and explain how sound is
made by
vibrations.

Conclusion:

When the sound waves from the tuning fork hit the lid, the vibrations
are
transferred to the lid and then to the popcorn kernels. This
cause the
popcorn to dance.